Conveyer.



- G. D- SEEBERGER.

v comma. APPLICATION FILED NOV. 24, 1902. RENEWED D150. 7, 1904. 4 900,000, Patented Sept. 29, 1908.

' 4 SHEETS-SHEET 2. v

30 J9 30 22 I .M. I.. 2 a 1, 9 L g 5 MQQZZQZXQ; o ".4

G. D. SEEBERGER.

GONVEYER. APPLICATION IILED NOV. 24, 1902. RENEWED DEC. 7 900,000.

v I Patented Sept. 29, 1908;

4 SHEETS-SHEET 3 4 SHEETBSHEET 4.

G. D. SEEBERGER.

GONVEYEE. AYPLIGATION FILED NOV. 24, 1902. RENEWED DBO. 7, 1904- 900,000, Patented Sept. 29, 1908.

U ITED smi es PATENT orrron CHARLES D. SEEBERGEB, or YONKERS, NEW roan;

GON'VEYER.

Specification of Letters Patent.

Patented Sept. 29, 1908.

Application filed November. 24, 1902, Serial No. 132,513. Renewed December 7, 1904. Serial No. 285,882.

To all whom it may concern;

Be it known that I, CHARLES D. SEE- BERGER, a citizen of the United States, residing at Yonkers, in the county of Westchester and State of New York, have invented certain new and useful Improvements in Con veyers, of which the following is a specificanectedby inclined portions,'and my improve-.

ments are designed to reduce" the strains on the apparatus incident to the changes'in the direction of move out which have been inevitable as these evices havebeen hitherto constructed.

My invention is further concerned with certain improvements in the structure of these devices by which a single carrier running in a single vertical plane and having its descending portion directly beneath its ascending portion, or vice versa,'can be used for conveying purposes on both portions. This feature' of my invention is especially applicable to traveling stairways, and necessitates a construction in which the treadsurfaces of the steps or supports shall remain horizontal and uppermost in both the ascending and descending portions, .a requirement that has been impossible with these devices as hitherto constructed.

My invention is'further concerned with certain novel combinations of elements and structures employed, as will be fully set out in the description of the apparatus and specifically pointed out in the claims.

To illustrate my invention, I annex hereto four sheets of drawings'in which the same reference characters are used to designate identical parts in all the figures, of which Figure 1' is a side elevation, diagrammatic in its nature, showing an arrangement of tracks in which my system may be employed, and indicating the arrangement of the driving connections; Fig. 2 is a vertical section of the same on the line AA of Fig.' 1, but on a greatly enlarged scale; Fig. 3 is a side elevation of the tracks at the upper end carriage thereof, showing'in full lines a few of the yokes on the adjacent ends of the steps in position, and indicating the position of the remaining yokes and the steps in dot- 0nd floor are also in the same plane.

ted lines; Fig'. -,;4 is a horizontal section of the same substantially on the line BB of Fig. 3; Fig. 5 is aview similar to Fig. 3 ,but showing the lower end carriage of the tracks; and Figs 6, 7 and 8 are sectional views on the lines CC, DD and E E, respectively, of Fig. 5, the associated parts of the ste s being shown in relative positions by dotte lines.

Promising that the tread surfaces of the steps remain uppermost throughout the entire line of transportation, and that the steps are connected throughout by one or more chains which move in the direction of the arrows of Fig. 1, and in the path indicated by the heavy line 1 1, Fig. 1 represents a side elevation of the tracks, and the gearing connecting the various portions of the chain or line of steps to control the movement of the drivin mechanism.

In t 0 design shown, the passenger steps on thetraveling stairway at the lowermost ascending landing 12, whence he is carried up the incline 13 to the horizontal landing 14,

where he may get off on the second floor, if he desires, or continue u to the third floor, being carried up the inc ine 15 to the horizontal landing 16 on the third floor, where the traveling stairway terminates in the particular design shown. The steps then descend about the upper end carriage 17 to the second floor, where a horizontal landing 18 is formed for people who desire to get on the traveling stairway to descend to the first floor, those embarking on this landing being carried down the incline 19 to the horizontal landing 20 on the first floor where they can get off. The line of steps then descend at 21, and ascend around the curve 22 constituting the lower end carriage and emerge on the landing 12. It isapparent from Fig.

1 of the drawings that in the present design of the machine, portions of both the ascending and descending runs provide landings which are in the same horizontal plane at each floor or level; for example, the landings 12 and 20 at the first floor are in the same plane, and the landings, 14 and 18 at the sec- These steps are all connected together by preferably two rack link chains extending the entire course, and, as hereinafter shown, located at the ends of the steps. The power for running the traveling stairway is supplied by the motor 23, which gears with a pinion 24 (see Fig. 2) which is secured on the outer 'end of a transverse shaft 25 journaled injecting downward from the under side the channel bars 27 which form the su ports for the tracks on the inclined and fiorizontal portions. In the particular construction shown in Fi 2, the shaft 25 is shown as provided with t e gear wheels 28 secured thereto near the ends and projecting u ward through the a ertures 29 formed in t e under webs of t e channel bars 27 and meshing with the rack links of the chains 30. Secured on the shaft 25 between the pinion 24 and the adjacent channel bar 27 is the bevel gear pinion 32, which meshes with the bevel gear pinion 33 securedupon the vertical shaft 34 journaled in suitable bearings (not shown), and having ,the bevel gear inion 35 on its lower end meshing with the bevel gear pinion 36 secured on a transverse shaft 37 which is similar to the shaft 25 and is provided with the same gear wheels for engaging the rack links 30 of the chains 11 at the point Where it is located at the upper end of the incline 19. Thegear connections between the shafts 25 and 37 are such that their rotation drives the chains in the proper direction. At the upper end of the incline 13, I locate another transverse shaft 38, which like the shafts 25 and 37 is provided with gear pinions and mechanism for engaging' the chains 11. A short, distance above the beginninglof the incline 15 I locate another transverse shaft 39 which is also provided with the gear pinions and mechanism for engaging the chains'll, and I connect these two shafts 38 and 39 by means of bevel gear pinions and an inclined shaft 40 sothat the two shafts 38 and 39 are compelled to move in unison with each other, and as they are driven by the chains 11, they move in unison with the shaft 25. Just above the beginning of the incline 19, I locate another transverse shaft 41, which, like the shafts 25 and 37 is provided with gear inions and mechanism for engaging the chains to be rotated therewith. In the horizontal landing 20 just in advance of the'beginning of the incline 1.9, I locate another transverse shaft 42 similarly provided with gear pinions for engaging the chains, and I connect these two transverse shafts 41 and 42 by means of suitable bevel gear pinions and an inclined shaft 43, so that the shafts 41 and 42 are compelled to rotate in unison. I may also connect the shafts 38 and 41 by means of bevel gears and a vertical shaft 44, so that'the four transverse shafts 3'8, 39, 41 and 42- are compelled to rotate in unison as they are driven by the chains. At a point just above the beginning of the incline 13, I locate another transverse shaft 45, and just previous to the beginning of the incline 13 I locate another transverse shaft 46, and connect the two by means of the customary bevel ear pinions and the inclined shaft 47, the shafts 45 and 46 being chains, and is connected by the customary bevel gears and shaft 49 with the shaft 46.

rovided with the cus-. -tomary spur gear pinions for engaging the The purpose of these various transverse shafts is as follows: The power for driving the entire system is shown as applied to the shaft 25, and if no transverse shafts were employed, it will be apparent that the pull on the chains would tend to raise them at the angles between the landing 14 and the incline 15,, and between the landin 12 and the incline 13. The tension on the c ains would also cause them to bear down ver hard and bind on the angle between the inc ine 13 and thelanding 14, and the weight ofthe lower half of the chain or line of steps would cause it to pull very heavily on the end carriage 17, the landingl 18, and especially on the angle between t e incline l9 and the'landing 18. Likewise the pull caused by the weight of the lower half of the chain of steps would tend to raise it as it passed the angle between the horizontal surface 20 and the incline 19.

As the steps are assembled, the distance between the shafts 38 and 39 is so calculated that the chains connecting the steps between these two points will be comparatively loose. The same adjustment is employed between the shafts 45 and 46, and between the shafts 41 and 42, between the shafts 25 and 37 around the end carriage 17, and between the shafts 46 and 48 around the end carriage 22. With this arrangement of partsywhen the mechanism is run, the chains on the incline 15 down to the shaft 39 will be under ten-' sion, but from the shaft 39 to the shaft 38, the driving power is transmitted through the shaft 40, and the chains in runnin over the two angles will be comparatively loose and free from any tension. From the shaft 38 down to the shaft 45 the chains will again be under tension as is necessary on the lift of the incline. From the shaft 45 to the shaft 46 the chains are loose, and the driving power is transmitted from the shaft 45 to the shaft 46 through the shaft 47, leaving the chains loose. Similarly, the shafts 25 and 37 being geared together and connected to the chain of steps, the chains run comparatively loosely on the landings 16 and 18 and around the end carriage 17 while they are under tension due to the weight of the steps and the load that may be on the incline from the shaft 37 to the shaft 41. From the shaft 41 to the shaft 42, the pull of the steps is taken by the ear mechanism through the shaft 43 and t e chain of steps is loose, between the shafts 41 and 42. The shaft 48 connected to the shaft 46 by the shaft 49 insures paying out the chains and steps to the carriage on the end 22 in unison with the general movement, and is a means of taking the strain ofl of the unotion of the incline 21 with the landing 20. With this arrangement of parts, which may be varied as much as may be necessary for different designs, it will be apparent that'I can keep the chains ta-ut and under tension on the inclines, while they are kept loose in passing the angles so as to do away with unnecessary friction, and thusenable me to more perfectly control the operation of the apparatus, dispensing with friction, grinding and noise. The employment of these transverse shafts connected as shown also serves to cut the system up into sections which are in equilibrium through the balancing of the ascending and descending portions. It will be apparent that instead of employing the transverse shafts geared together by the inclined shafts, I might run these various transverse shafts by motors suitably synchronized, as indicated in dotted lines at 50 and 51, and obtain the same results in that manner. This feature of my invention is of far reaching importance, and I do not desire to be limited to the employment of any specific mechanism for obtaining the results herein set forth.

Referring now to Figs. 3 to 8, the second feature of my invention consists in the novel form of step employed and tracks with which they co6perate by which I am enabled to use both the ascending and descending inclined portions in the same plane and one above theother for the urpose of carrying passengers both up am down. The steps 52 are of the same general-construction which I have hitherto employed, as shown in my application No. 79,520, filed October 22, 1901, except that the arms 53 and 54 constituting the yoke which carries the rear and front wheels 55 and 56, respectively, are not in the same horizontal plane, but are separated by -an angle so that on the inclined portions of the tracks, as shown in section in Fig. 2, the two tracks for the front and rear wheels are in substantially the same horizontal plane, instead of being arranged as upper and lower tracks as in the form shown in my prior application. On the horizontal landing portions, however, thetracks 57 for the rear wheels 55 are below the tracks 58 for the front wheels 56, and the angles between the arms 53 and 54 are such with relation to the angle of the inclined end that the tread surface of the step, which is rigidly secured relative to the arms 53 and 54, will always be horizontalon all the inclines and landings, and, in the design shown, also as the steps are passing around the curves at the ends. 7

The angular formation of the yokes is important because in going off an incline to a horizontal run, or vice ver'sa, it allows for clearance to avoid striking the tracks; otherwise it would be necessary in the form shown from the structure 64.

to rovide gaps in the track at such points to e controlled b a switch which would of; course be a comphcated structure and liable,

to easy derangement. The okes: of each step are connected by a stepar or rod 59; these parts may be rigidly connected orthe yokes may be loose upon these rods. Instead of having the steps connected by a single central chain, I preferably em loy the two chains made up of the rack inks 30, which are of the same general construction as those shown in my aforesaid application, but which are pivoted on the outer ends of the step-bars or rods 59, and run next to the sides of the channel beams 27, as clearly shown in Fig. 2. I preferably secure on the step-bars 59, between the chains and the yokes, the collars 60, which cooperate with the channel guides and tracks hereinafter described. Referring now to Fig. 3, which shows the tracks around the upper end carriage connecting the upper ends of the way formed by the tracks 57 and 58, the horizontal landing portion of the track 57 for the rear wheels 55 runs into the channel track 61, which, as clearly'shownin said fi ure, extends around the end in a substantial U-shape, and is arranged -to co6perate with the wheels 55 on two sides to prevent any movement thereof except in the ine of the track. This channel track is continuous around the end, except where it is interrupted, as seen at 62 and 63, for the passage of the step-bars 59 in one place. While the channel track 61 is continuous except for the interruption noted, it is made up of the u per main part which I have lettered 61, an( of the lower part, which I have lettered 61 ,-each part being supported by suitable brackets connected to the built-up channel bars 64 forming the outer structure at the ends of the track. The upper'portion of the track 58 for the upper wheels 56 terminates in the channel track 65, which is also of a substantially U-shape, and the outer flange thereof is continuous, but the inner flange is interrupted at two points, 66 and 67, to permit the passage of the outer extremities of the axle bars 59. The movement of the ste s about this upper end car'- riage will now e ap arent, by reference to Fig. 3, and to the yo (es and wheels, most of which are shown in dotted lines to avoid covering up the tracks. The ste s maintain their horizontal position throug lout, and as the upper wheels 56 cross the ga 66 in the channeltracks 65, the step is held up and in proper position byreason of the collars 60 resting on the step bar guide or track 68, which is suitably supported by a bracket The steps now follow around the tracks without interruption until the wheels 55 cross the gaps 62 and 63 and the wheels 56 cross the gap 67, the steps being held in proper position as above de- 65 ing through scribed. These gaps are passed by reason of the collars cooperating with the channelguide formed by the two axle bar tracks 69 and 70 suitably supported by brackets from the structure 64 at the upper and lower sides changing the position of the riser sides, so

that the single fixed risers canbe employed both on the ascending and descending portions of the tracks, a possibilitythat, so far as I am aware, is entirely novel.

Referring now to Fig. 5, which illustrates the lower carriage connecting the lower ends of the way formed by the tracks 57 and 58, as the steps reach the limit of their downward movement, the upper wheels 56 pass from the horizontal portion of the tracks 58 into the channel track-71, which serves to guide the steps about the lower end in the same manner as did the channel track about the upper end. There is a ap formed at 72 between the outer flange of the channel track 71 and the track 58 to permit the passage of the axle bars 59, and the step isheld in its vertical position as it passes this gap by the collars 6O cooperating with the guide track 73, which is supported by a suitable bracket extending from the built-up channel structure 74 formin the supports for the tracks around the ower end. The lower Wheels 55 pass from the horizontal portion of the track 57 into the substantially U-shaped channel track 75, which is continuous except for the interruptions at 76 and 7 6 necessitated by the passage of the axle-bars 55 at this point. These interruptions at 76 and 76* necessitate the channel track 75 being made in two parts, the lower main ortion of which I have lettered 75, and t e upper shorter portion of which 'I have lettered 7 5, each portion being supported by suitable brackets from the structure '74. To carry the steps over the gaps 76 and '76 and keep them in proper position, I provide the upper and lower channel-guides formed by the,

tracks 77 and 78 suitably supported by the brackets from the structure 7 4, and cooperating with the collars 60 on the axle-bars 59. By means of the end-carriages or reversers at both ends of the machine, as herein de scribed, I am enabled to carry the steps with their tread surfaces horizontal about the upper and lower ends, and reverse the direction of movement thereof so that they are ready to carry the passengers up the inclines 13 and 15 and down the incline 19.

The purpose of the carriages at the ends of the machine is to present or deliver the steps inhorizontal position at the carrying or transporting )ortions of the runs.

the carriages the steps may or In passmay not be retained with their treads horizontal, although in the present embodiment I do so retain them, the essential feature in this respect being that they shall be resented or delivered with their treads in iorizontal osition at the places where they receive thelr load.

While I have herein shown my invention as embodied in the form which I at resent consider best adapted to carry out its purposes, it will be understood that it is capable of modifications, and that I do not desire to be limited in the interpretation of the following claims except as may be necessitated by the state of .the prior art.

What I claim as new, and desire to secure by Letters Patent of the United States is 1. In conveying ap aratus, a series of supports, guiding and riving means for said supports forming a plurality of transporting runs having inclined portions, said guiding means maintaining one face of each of said supports in substantially parallel position throughout said inclined portions, and reversers to transfer said supports between said runs.

2. In conveying apparatus, a series of supports, guiding and driving means for said supports forming a plurality of transporting runs having horizontal and connecting in- 95 clined portions, said uiding means maintaining corresponding aces of said sup orts in substantially arallel position throng out said inclined and horizontal portions, and reversers to transfer said supports between 100 said runs.

3. In a conveying apparatus, the combination with the ways extending to different levels and having ortions thereof extending in different angular directions, of an endless conveyer cooperating with said ways, mechanism for driving said conveyer, and means connecting ortions of said conveyer adjacent the ang es so as to transmit the driving strain past said angles removing the tension from the conveyer as it passes said angles.

4. In a device of the class described, the combination with the ways extending in different angular directions, of an endless conveyer cooperating with said ways and composed of a series of steps connected by a chain, means for driving the conveyer, spur gears meshing with said chain adjacent the angles, and connections between the spur gears on the two sides of the angles so as to transmit the driving strain past said angles removing the tension from the chain as it passes them.

5. In a conveying apparatus, the combination with the ways extending to different levels and portions thereof extending in difl'erent angular directions, of an endless conveyer cooperating with said ways and composed of a series of steps connected. by

- an endless conveyer cooperating with said ways and com osed of a series of steps conconnections with said spur gears on each' side of the angle-so as to transmit the driving strain past the angle thereby removing the'tension from the chain betweeri'the gears.

6. In a conveying apparatus, the combination with the ways extending to different levels and having ortions thereof extending in different angu ar directions, of

nected by a pan of driving chains located at the ends of the steps, a pair of spur gears meshing with said chains to drive the con-.

veyer, a pair of shafts on opposite sides of an angle each having a pair-of spur gears meshing. with the chains, and connections between said shafts compelling their movement in synchronism and operating to transmit the driving strain past the angle removing the tension from the chains as the pass it.

7. In a device of the class described, the combination with a series of steps connected by a pair of driving chains, of ways in which said steps travel, saidways including landing portions at different evels and an inclined portion connecting the same, driving mechanism for said chains located in the inclined ortion adjacent to the upper landing, an means to reduce the tension of the chains at the angles.

8. A moving stairway consisting of upper and lower transporting portions, means for driving the stairway, gears independent of the driving means and engaging the said portions respectively, and a connection between thegears. I

9. A moving stairway consisting of upper and lower carrying portions, a motor having drivinghconnectlon with the stairway, transverse s afts connecting respectively with the upper and lower portions, and connections between the shafts.

10. A moving stairway comprising parallel endless chains having steps and providing upper and lower carrying portions, means for driving the stairway, a transverse shaft associated with each portion and having spur gears engaging the chains, and a shaft connectin the transverse shafts.

11. n a device of the class described, a step provided with an axle bar having angular wheel-carrying yokes at its ends to bring the wheel on one arm'of each yoke above the wheel of the other arm.

12. In a device of the class described, a step consisting of the axle bar having'the step proper secured thereto and havingthe yoke arms extending therefrom at different angles from the perpendicular to' bring the wheel on one yoke arm aboye the wheel on the other arm.

13. A moving stairway comprising a series of steps, each step having an angular yoke at each end, wheels in the yokes, and tracks adapted to present the treads uppermost on the runs with the leading wheels on one run following on the other run.

14. In a device of he class described,the

combination with the tracks forming a continuous Way in a single vertical plane and with the ascending and descending portions covering the same surface, of a set of steps cooperating with said tracks, and driving connections for said steps, the tracks and ste s being so related that the-latter remain wit their tread surfaces horizontal and uppermost on both the ascending and descendmg portions of the tracks.

15. In a device of the class described, the combination with the tracks forming a continuous way, of a set of steps coo crating with said tracks each having a single riser, and driving connections for saidsteps, the tracks and steps being so' related as to cause the steps to remain with their tread surfaceshorizontal and uppermost and with the risers at the rear on the ascending ortions of the track and at the front on the escending portions.

16. In a device of the class described, the combination with the steps, of the tracks forming a continuous way in a single vertical plane and with the ascending and descending ortions covering the same surface and havmg curves'at their ends adapted. to guide the steps around said'ends with their tread surface uppcrmost so that the noses of the steps will be in advance on the ascending portion of the tracks and in the rear on the descending portions of the tracks.

17. A moving stairway, guide tracks for the ends thereof adapted to change the di-' rection of movement of the steps while presenting their tread surfaces uppermost.

18.. A moving stairway, tracks for the ends thereof adapted to change the direction of movement of the steps while presenting their treads uppermost on the transporting runs.

' 19. In a device of the class described, the combination with the tracks forming a way, of a set of steps cooperatingwith sai tracks, channel 1 tracks at the ends of the way ada ted to chan e' the direction of movement of t e steps wh "in difierent planes, an channel tracks at the ends of the way adapted to change the direction of the movement of the steps while presentin their tread surfaces up ermost.

21. n adevice of the class escribed, the

.combination with tracks forming a way, of

e presenting their tread surfaces u permost on the transporting runs.

interruptions to permit the passage of the a set of steps having extended axle bars provided with leading and following wheels in different planes and cooperating wlth the tracks, and channel tracks at the ends of the way adapted to change the direction of movement of the steps and present the1r tread surfaces uppermost on theruns and provided with interruptions to permit the passage of the extended axle bars, and guides cooperating with sa1d axle bars to carry the steps past the lnterruptions.

22. In a device of the class described, the combination with the tracks forming a way, of a set of steps coo erating with said tracks and having OXtGIlL ed axle bars and the leading and following wheels in different planes, and channel tracks at the ends of the way adapted to change the direction of the movement of the steps while presenting their tread surfaces uppermost and provided with interruptions therein to permit the passage of the extended axle bars, and vcliannel-gniides cooperating with said axle bars to carry the steps past the interrup tions.

23. In a device of the class described, the combination with tracks forming a way, of a set of steps cooperating with said tracks and having extended axle bars, driving chains connecting said axle bars, and channel tracks at the ends of the main tracks adapted to change the direction of movement of the-steps and resent their tread surfaces uppermost on t e runs and having extended axle bars of the steps and having guides cooperating with said extended axle bars to carry the steps ast the interruptions.

24. In a device of t e class described, the combination with the tracks forming a wa of a set of steps cooperatin with said traclzs and having extended ax e '--bars,, driving chains eonnectin said extended axle bars, and channel trac s at the ends of the main tracks adapted to change the direction of the movement of the steps while presenting their tread surfaces uppermost on the runs and having interruptlons therein to permit the passage of the extended axle bars of the steps, and havin the channeluides c0-' operating with sand extended a e bars to carry the steps astthe interruptions.

25. In ad'evice of the class described, the combinationwith upper and lower tracks forming a continuous way, of an endless series of steps cooperating with said tracks, and driving connections for said steps, the

- tracks and steps being so related that 'the latter have their tread surfaces horizontal ,and uppermost on both the ascending and descending runs.

26. In a device of the class described, the combination with the tracks forming a continuous way in a single vertical plane, of an endless series of steps cooperating with said tracks, and driving connections for said steps, the tracks and steps being so related that the latterpresent their tread surfaces horizontal and uppermost on both the ascending and descending runs.

27. In a device of the class described, the combination with tracks forming a continuous way, of a set of steps cooperating with v said tracks and having leading and following Wheels in different planes, and U-shaped carriages adapted to change the direction of movement of the steps while presenting their tread surfaces uppermost on both the ascending and descending runs, the tracks in the carriages crossing.

28. In a device of the class described, the

combination with the tracks forming a way in a single vertical plane, of a set of steps eooperating with said tracks and having leading and following wheels in different planes, and U-shaped channel tracks at the ends of the way adapted to change the direction of movement of the steps while presenting their tread surfaces uppermost, the channel tracks for the leading wheels crossing those for the following Wheels.

29. In a conveying a paratus, the com bination with the ways if ends, of an endless conveyer cooperating with said ways, mechanism for driving said conveyer, and means connecting portions of said, conveyor adjacent the 'cnds so as t transmit the driving strain past said ends removing the tension from the conveyer as it passes said ends.

30. In a device of the class described,'the combination with tracks forming a way, of a set of steps 006 and channel trac (s at the ends of the way ada ted to change the direction of movement of the steps while presenting theirtread'surfaces uppermoston both the ascending and descending runs. 31. In a device of the class described, the

' combination with the tracks forming a way,

of a set of steps cooperating with said tracks, and channel tracks at the ends of the way adapted to change the direction of the movement of the steps while presenting their tread surfaces uppermost.

32. In a conveying apparatus, the combination with the ways extending to different levels, of an endless conveyer cooperating with'said ways, mechanism for driving said conveyer, and means cooperating with said conveyer on a certain portion of the ways to remove the tension thereon While passing said portion of the ways.

33. In a conveying apparatus, the combination with the ways extendingto different levels, of an endless conveyer cooperating with said ways, mechanism for driving said coirveyer, and means cooperating therewith to establish tension in a pori ion thereof and remove it on another portion aving the rounded,

erating with said tracks,

In a conveying apparatus, the

a nation with the ways extendmg'todifferent lower ascending and ren i g levels, ofan' endless conveyer co 35. Amoving stairwa .ha gup-per and (f escel i ll ing lower ascending and ca portions and providing landings loeatediin having upper and u sce'nding carrying ortions' and providing lan orizontal speotively.

the same horizontal plane. v 4

'- '36. Amovingstairwaly e 37. A moving stairwaiyhaving lower ascending and scending carr portions provided with tracks, and stepsa v-" mg front andrear'wheels', each set of'wheels leading ,on one portion and-following on the.-

other.

"39. A du tracks forming landings at different levelsjan inclined ways in both directions between'the dmgs in the same plane at the 'topand. bottomie-i ections he pleximoving stairway coinprisingL p V I W. Hal-"BRADY,

levels, an swa sriestf steps moving in a bothdjrections' on thetracks, and connected meansjto drive the steps inboth directions. 40. A duplex conveyer .comprismg tracks said'way, a' carriage at each; endoi the wag, and tracks inthe earriages to change the v treads uppermost in both direetlons;

1 a;lity f of transporting runs having inchned stantially parallel position.

portions,driving means for said supports, and

t .7 V v u revers'ers to transfer said supports between a .38. A'duplex moving stairwa comprising tracks forming a wa in both tween difierent 'leve an endless series-ofste s movingin both'direetionsonsaid way, means to drive the steps in bothdirec: tions. 4,0

in presence of two .witnesses.--

j "'Witn sses;

T EQWJMARSHALLLV) .recti,on of traveltof thesteps and present their in the same vertical zplane-forming a contin-" 7 'uous way in both directions between diiierent levels; an-endless ser es of steps runnlng onr "41; In conveying apparatus, a series of supports, guides for said supports forming a plu-'- '45 portions,- and reverserstotransfer said snpports' between saidrung'said reversers .re- 7 {ceivingand'delivering said; supports in suhl ",42gjlnconveylng apparatus, a series of supports; guides for said supports forming a phi-- mlitygoftransporting having inchned said said reversers receiving and deliv- Bring-Said I?l l'lisin.substantiallyparallel ,P0sition;".. 1 I

my -i sigifiature n. SEEBERGER' 

